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Scientists launch Decade-Long study to unlock secrets of stem cell transplants

NCT ID NCT03000244

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Sep 01, 2026 · Updated 20 times

Summary

This study follows people who have had a stem cell transplant (and their donors) for years after the procedure. Researchers want to understand long-term health effects, how the transplanted cells change, and how to improve the body's ability to fight cancer. Participants will have yearly check-ups, blood tests, and answer health questions.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could reveal better ways to manage long-term health after stem cell transplants and improve how well the immune system fights cancer.
What could go wrong
This is an observational study, not a treatment trial, so it won't directly test a new therapy. Results may take years and might not lead to immediate changes in care.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 2,000 people

The number the study aims to enrol. It can still change while the study runs.

Started

Apr 2017

Expected to finish

Aug 2050

An estimate. End dates often move.

Lead sponsor

A government research agency

The lead sponsor is the US National Institutes of Health.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Patients who have received an allogeneic stem cell transplant, cellular therapy, or gene therapy as well as donors of stem cells who are related to the patients who are study participants. Parents of minor recipients may also be enrolled to complete surveys. Participants can be from any community or co-enrolled on another NIH protocol.

Ages

4 to 120 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

* INCLUSION CRITERIA FOR PATIENT SUBJECTS: * Individuals who underwent HCT or received cellular or gene therapy for any indication (malignant or non-malignant) and are surviving one year or more from the date of therapy * Age \>= 4 years * Ability of individual or individual s Legally Authorized Representative (LAR) to understand and the willingness to sign a written informed consent document * Individuals will need to have a primary physician within the US (primary care, oncologist, hematologist, etc.) that will provide continued comprehensive care for the duration of participation in the study. PI may allow for established medical providers to be located outside of the US. EXCLUSION CRITERIA FOR PATIENT SUBJECTS: -Individuals with active disease relapse or new hematologic malignancy including post-transplant lymphoproliferative disorder (PTLD) are excluded from protocol enrollment. INCLUSION CRITERIA FOR DONOR SUBJECTS: * Related stem cell donors of patients meeting the above criteria as a donor of hematopoietic progenitor and stem cells or leukocytes * Age \>= 4years * Ability of patient or patient s Legally Authorized Representative (LAR) to understand and the willingness to sign a written informed consent document INCLUSION CRITERIA FOR PARENTS COMPLETING SURVEYS: * Parents/guardians of minors enrolled on the study who have undergone HCT * Willingness to complete surveys about the minor that underwent HCT

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    RECRUITING

    Bethesda, Maryland, 20892, United States

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